Siriu Surf Break

Lat Long: 28.00° S 48.63° W

Siriu WaveFinder

Issued: 8 pm 21 Aug 2026 (local time)

Forecast update in  hr  min

Today's Siriu sea temperature is
18.9° C
0.3° 

Siriu surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Siriu surf forecast from 22 Aug 2026:

  • Best quality surf: Saturday 22 Aug, 3AM (local time) - 10ft (3.0m), 10s period, S swell with cross-offshore winds.
  • Most powerful swell: Monday 24 Aug, 9AM (local time) - 8ft (2.5m), 15s period, SSE swell with 3,135 kJ wave energy.
  • Next surfable swell (1★+): Saturday 22 Aug, 3AM (local time) - 10ft (3.0m), 10s period with S swell.

Best Forecast Surf Conditions for Siriu this week:

The surf forecast for Siriu over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Aug 22) at 3AM. The primary swell is predicted to be 3.0m and 10s period with a secondary swell of 2.2m and 10s. Another secondary swell of 0.5m and 8s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Siriu in the next 16 days are 2.5m 15s and forecast to arrive on Monday (Aug 24) at 9AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 5s period and expected on Friday (Aug 28) at 9AM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Sat 22nd Aug)10ft (3.0m) 10s
Best Surf 3AM (Sat 22nd Aug)10ft (3.0m) 10s
Most Powerful 9AM (Mon 24th Aug)8ft (2.5m) 15s

Table - best surf conditions forecast for Siriu over the next 16 days.


  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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